Service door



ZUZZiZSS May 22, 1928. 1,670,372

F. J. MATCHETTE SERVICE DOOR Filed Nov. so, 1923 3 Sheets-Sheet 1 Fan? Juan/161m May 22, 1928.

F. J. MATCHETTE SERVICE DOOR Filed Nov. 30, 1923 3 Sheets-Sheet 3 rank (7 gaze/2612 g Patented May 22, 1928.

UNITED STATES PATENT OFFICE.

FRANK J. MATCHETTE, OF NEW YORK, N. Y., ASSIGNOR TO THE SERVIDOR CO., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SERVICE DOOR.

Application filed November 30, 1923.

My invention relates to improvements in service doors of the general type exemplified by my prior Patents No. 1,403,559, Jan. 17. 1922, and No. 1,447,803, March 6, 1923.

The object of the invention includes the simplification and elimination of unnecessary parts in such service doors; the provision of a construction such that the parts can be packed for shipping in very small space; and the lightening ot the finished structure so that with the service door in use, the load on the hinges ot' the main door is not greater than without the service door. This lightening arises in two ways, l'irst by the omission of a separate frame for the service door, and second by lightening the door panel itself.

In the accompanying drawings:

Figure l is a vertical and Fig. 2 a horizontal section of one type of service door according to the invention:

' Figures 3 and 4 are detail sections of the hinge and lock margin of the service door panel; i

Fig. 5 is a Vertical section similar to Fig. 1 indicating the application of ventilators to the improved door;

Fig. 6 is a detail section of the lock stile on line G-6 of Fig. 5; f

Fig. 7 is a similar section of a modified construction Fig. 8 is a side elevation of the same type of construction embodied in a service cabinet for residence use;

9 is a section on line 99 of Fig. 8; and

Fig. 10 is an enlarged construction in Fig. 9.

In the embodiment of the invention selected for illustration, the customary parts of the main door retained in the new construc tion are the usual hinge. or hanging stilc ltl, the lock stile 12. the top rail let and the bottom rail 16. As in my prior patents herein above referred to, the lock rail, montants and panels are replaced by the service conipartmcnt or cabinet, but no separate stile"; and rails are employed tor the auxiliary or secondary doors detining the compartnrents, which doors are hinged directly to the edges of the stiles and rails-0t the main door. This accomplishes a remarkable saving in weight, and also a material ll'l'lPYOYQIDt-Zlit in shipdetail oi" the hinge Serial No. 677,901.

ping facilities, as the individual door panels for the compartments an be telescoped and shipped in a small fraction of the space required for shipping a completely assembled cabinet according to the prior patents.

Referring now to Figures 1 to l inclusive, the hanging stile 10 supports fixed hinge members 18 having elbow arms 20 to support the pintles 21 for the compartment doors. Similarly, the lock stile 12 carries a supporting bracket 22.011 which the inter lock 24; is mounted. Burglar guard 23 grips lugs of the interlock casing between itself and the bracket 22.

The door panels 26 and 28 each comprise parallel plates 30 of very light sheet metal, reinforced and stitlened by each other, by reason of onset portions in the inner plate extending into contact with the outer plate and spot welded thereto. There may be any desired mnnber of individual circular bosses 32 suitably spaced over the surface of the panel for this purpose.

7 As clearly indicated in Figure 2, the coinpartment door panels arc of the curved configuration discussed in detail in my prior Patent 1,391,183, of Sept. 20. 1921. While this is not essential to this type of construction, it will be apparent that the continuous curvature involved very materially strengtln ens each plate 30, and the cumulative stiffening effect of the unions between the plates make it possible to employ exceptionally thin metal, resulting in a correspondingly light weight construction. In fact. the strength necessary to insure against local dents becomes a material factor in determining the thickncss of metal employed in a panel of such construction.

Along the Vertical edges of the panels still'ening strips 31- ot somewhat greater thickness are employed. Both plates 30 are wrapped around the outer convex snnface oi? the strip, and the outer plate margin is then continued around the extreme edges oi the strip and the inner plate and back along the concave inner face of the strip. Over this on the inside is laid an additional strip 36 olt'set at 38 to define a groove for receiving and gripping the sealing strip 40 of felt; rubber or any other suitable material.

Along the lock margin of the panel this completes the edge structure, and the parts are all welded together into a rigid unitary structure asby means of spot welding. at points 452 For thehinge edge, movable hinge butt members 4% are first laid in contact with the strip 36 and spot welded therewith to unite thejwhole into a substantially integral and very rigid unit.

It ill be apparent that the elbow arm permits the hinge sealing strip 40 to move in a counterclockwise direction around pintle 21 as seen in Figure and'provi des the necessary clearance for a full opening of the door panel. u v

At the top :uulbottom margins, the plates are crimpedtogether and then turned over as 4-6 to term horizontal ledges prolonged by end cover plates all spot welded thereto which ,platescarry relu ively narrow holding strips to grip ainl retain the top and hotto'nrsealing strips 52. At the top, this structure constit tes the top of the cabinet itscll", but. the. bottom it is desirable to have a fixed surface on which articles can be laid when the cabinet is open. l accordingly provide a horizontal shelf 54: supported at its ends on stiles 10 and 12 by means of suitable brackets 06,

At the top, it is customary to provide means for hanging coat hangersand the like when a suit of clothes is to be placed in the cabinet. For this purpose, however, noth ing more isrequired than a simple screw hook 58 entered directly in the lower edge of the upper rail l 'l. v

As in my prior patents the compartment is subdivided inltoan upper and a lower portion by a shelf 60 carried by one ofthe doors. Just below the sheli I prefer to providea continuous belt of reinforcement entirely across the'door. Atthis level plates 3l) are incontact, and further reinforcedby. an additional'plate 6:2 bent back'and forth to have, in thisinstance, six dili'erent portions 64 perpendicular to the plane otthe door panel to stiffen the same. Both plates Ill) and plate 62 are united into a single rigid and substantially integral structure as by spotwelds .at (36. The brackets (38 for supporting shelf 60 are attached at and? to vertical portions of plate 62.

A. door stop comprising pivoted links Tel.

and 76 interconnects the two doors to limit the opening movement of either one.

It will be understood that the interlock 24; automatically prevents simultaneous opening otboth doors; Link 74 projects beyond its point of pivotal connection with link 76 to make contact with a suitable lug 78 and prevent the links from moving quiteinto alignment. Brackets each comprisinga plate portion 80 and a horizontal ear 82 are employed for the pivotal mounting and support o't the door stop, and these brackets maybe tastened to verticalportions 0t plates'62 as at tor means according to my prior Patent 1,-

403,559 herein above referred to. For this purpose; plates a't -the top are omitted, and a plate 94- is mounted on stiles ll) and lil bybracke 96 similar to brackets The plate is stitl'ened by angles 98'a'nd 100 spot welded thereto at 102 and 104;. Angle 10.0

carries clip 106 for the pivotal support of the damper plate 108 carrying the sealing edgestrip 110 positioned to movenpianfd contact the toprail le'at 112. l'vlien'tlie damper plate is down, angle 98 makes contact with the side of strip 110 close to the edge of plate 108 to form a restainl support for the (plate and at the .same time-secure quiet operation by cngagi-ngonlythe-seal ing strip. Suitable operating rods ll l an'd 116 are provided, actuated precisely as ,in my earlier patent by rocker 11S rotated by shaft fill pivoted, atone end in supporting clip 122and at its other end act-iiatedrby push buttons 12 i. V

Automatic closure means operable in case of fireare provided"substantially identical with those "in my prior Patent. 1,403,559. These comprise supports 1 26 "andthe anovable standard 128 actuated by spring-130. As the details of this structure have been fully set forth in my earlier patent, it is not thoughtnecesasry to encumber the present description with a repetitionthereot. Similarly, the lower damper, pivoted to lfrottom piece andmoving down against the bottom rail 16, being in all material respectlentirely identical with that in my prior patent, has not been illustrated and described in detail.

The space between plate 30 may be tilled Wltll any suitable sound absorbing go'r lire protecting composition. One of the most satisfactory fillings, both frointhe point of view of expense, and serviceability, is the air with which the spaces will naturally "fill themselves during the'process of manufacture.

The places Where sound can pass most easily through the door illustrated, are the marginal reintorced portions of the cabinet door panels. Here, soundmay pass into the cabinet through what amounts to a single metal wall, and out of the cabinet again through a siinilarrwall. A somewhat more sound proottype ofvconstruction,lwhich,also has a slightly more finished appearance when the cabinetdoors are-open, may befolb a med by employing one cabinet stile member only 132 as shown in Figure 7, to carry the interlock 24. The lock edges of the doors are then formed with plates 30 remaining spaced apart past the edges of stile 132, be yond which the outer plate is wrapped around a projection 134 on the inner plate to partly encircle the adjacent edge of stile 132.

Referring now to Figures 8, 9 and 10, I have illustrated an all metal construction, more especially adapted for residence use, Where the service cabinet is often built into a wall, rather than a door.

A single strip of sheet metal is rolled to house the construction, comprising the main end wall 136, the reinforcing side wall margins 138 and the rabbet, 140 for housing the door. V-shaped notches are then cut in parts 138 and 140 and the strip forming wall 186 bent at right angles. so that the top, bottom, and both edge walls of the cabinet are formed of a single strip united by spot welding to an angle 142, and at the corner by braces 144 also spot welded in place. The edges of plates 30 are clinched over each other as at 142. At the hinge edge, slots are formed at 145 to permit insertion of the movable hinge leaf 146 inside the door structure, where it is spot welded in place before the inner plate is added. Similar slots in rabbets 140 permit a fixed leaf 148 to be similarly mounted on margin 138.

Holes 150 may be provided, if desired, for use in fastening the structure in place, and a suitable special fitting 152 is spot welded in place to support the interlock.

IVithout further elaboration, the foregoing will so fully explain the gist of my in vent-ion, that others may, by applying current knowledge, readily adapt the same for use under various conditions of service. without eliminating certain features which may properly be said to constitute the essential items of novelty involved, which items are intended to be defined and secured to me by the following claims.

I claim: 1. In combination, a main door having stiles and rails. and two smaller doors mounted on said same stiles and rails to form anenclosure carried as a whole by said main door.

In combination, a main door having stiles and rails, and cabinet doors each hinged to one of the stiles and oi'erlapping the edges of both stiles and both rails to form a seal when closed.

3. In con'ibination, a main door haying stiles and rails, and cabinet doors hinged to one of the stiles and overlapping the edges of both stiles and both rails to form a seal when closed.

4. In a service door. in combination. cabinet doors, and an edge frame uniting said doors to form a complete cabinet. said edge frame projecting in all directions beyond said cabinet, and hinge butts carried by said. frame to suspend the frame and cabinet for pivotal movement to operate as a main door.

5. In a service door, in combination, a main door frame comprising stiles and rails, and a compartment door having, when closed, edge contact with the faces of said stiles and rails to form a closure, the body of said door lying outside the plane of contact to gl" depth to the compartment.

6. In a service door, in combination, a main door frame comprising sti'les and rails, and a compartment door having, when closed, edge contact with the faces of said stiles andv rails to form a closure, the body of said door being curved contimuiusly out away from the plane of contact to give depth to the compartment, said compartment door being hingedly mounted directly upon one of the stiles of the main door.

7. In a compartment door, in combination, a panel comprising parallel sheet metal plates slightly spaced, one plate having bosses reaching through to the other plate and spot welded thereto, and a stitfening strip along the margins of said plates, the margins of said plates being wrapped around said stiffening strip and spot welded therewith into a rigid unitary structure, one plate margin being wrapped over one side of said stiffening strip and the other plate. margin being wrapped over said first plate margin, around the edges of said first margin and stiffening strip and back across the other face of said strip.

8. In a compartment door, in combination, a panel comprising parallel sheet metal p'lates slightly spaced, one plate having bosses reaching through to the other plate and spot welded thereto, a stiffening strip along the nutrgins of said plates, the margins of said plates being wrapped around said stiffening strip and spot welded there with into a rigid unitary structure, and another strip spot welded to said structure and offset therefrom at its extreme outer edge to define a groove for holding a strip of felt.

9. In a. compartment door. in combination. a panel comprising parallel sheet metal plates slightly spaced. one plate having bosses reaching through to the other plate and spot welded thereto, a stiffening strip along the margins of said plates, the margins of said plates being wrapped around said stiffening strip and spot welded therewith into a rigid unitary structure. another strip spot welded to said structure and otfset therefrom at; its extreme outer edge to define agroove for holding a strip of felt, and hinge butts laid over said last mentioned strip and spot welded thereto to form part of the structure. 7

' 10. In a compartment door. in combina tion, a panel comprising parallel sheet metal plates, a strip spot welded along the margin of one plate and offset therefrom to define a groove, and resilientsealing strip in said groove.

11. In combination, a main door frame, sheet metal auxiliary doors defining a cabinet carried as a whole by said frame, a reinforcing member on said doorhaving flange portion lying perpendicular to the door, and a door stop fastened to said reinforcing member.

12. In combination, a main door frame, sheet metal auxiliary doorsdefining a cabinet carried as a whole by said frame, reinforcing members on said doors having flange portions lying perpendicular to the doors, and av door step interconnecting said doors and fastened at. its ends to said reinforcing members.

13.111 combination, a main door frame, doors cooperating therewitl'l to define a cabinet carried thereby, movable hinge butt members on said doors, and fixed members on said frame having elbow arms and const'ituting hinge butt members, the hinge pinties lying beside the frame, said doors extending past the pintles into sealing contact with the side face of the frame, and said fixed members leaving clearance for the movement of the extending portions of said doors.

In combination, a main door frame, doors cooperating therewith to define a cabinet carried thereby, movable hinge butt members on said doors, and fixed members on said frame having elbow arms and constituting hinge butt members, the hinge p intles lying beside the frame, said doors extending past the pintles into sealing contact With the side face of the frame, and said fixed members leaving clearance for the movement of the extending portions of said doors, theextreme edges of said doors being formel by resilient sealing strips to secure quiet contact.

15. In combination, a main door frame, doors cooperating therewith to define a cabinet l-arried thereby, a reii'iforcing plate set into the inner face of each door, and a door stop attached at its. ends to said plates to interconnect said doors and limit their relative angular displacements.

16. In combination, a main door frame, doors cooperating therewith to define a cabinet carried thereby, said doors comprising parallel spaced plates united by offsetting one plate into contact with the other inteij-vals and spot welding, a shelf carried by one of said doors, and brackets for supporting said shelf attached to the door at one of the Welded portions thereof.

17. in combination, a main door frame, doors cooperating therewith to define a cabinet carried thereby, said doors comprising parallel spaced plates united by offsetting 'oneplate into contact witlrthe other at intervals and spot. welding, and a door stop connected to each door at one of the welded portions thereof.

18. In combination, a main door frame,

doors coo; crating therewith to define a cabinet carried thereby, said doors comprising iiarallel spaced platesunited by offsetting net carried thereby, said LlOOI'S'COIHPllSlUg parallel spaced pl; united 'by offsetting one plate into contact with the other at intervals and spot welding, said plates being further united by weldingat a plm'ality of closely adjacent points constituting a belt of such welding across each door, a shelf carried by one door just above the belt of Welding, shelf supporting brackets attached to the door at the belt of welding, and a door stop just below the shelf connected to each door atthe belt level.

"ill. in combination, a main door frame,

doors cooperating therewith to define a cabinet carried thereby, said doors comprising parallel. spaced plates united by offsetting one plate into contact with the other at intervals and spot welding, each door being provided with a groove, a reinforcing plate 'set into the groove, a shelf carried by one door just above said plate, shelf support ing brackets attached to-said' plate, and a door stop just below said shelf having its ends fastened to said plates. 7 i

21. In combination, a main door frame, doors cooperating therewith to define a cabinet carried thereby, a fixed bottom piece for said cabinet carried by saidframe, projections on the tops of said/doors exteiniling inwardly to engage the frame when the doors are closed and form the top of the cabinet, and similar projections on the bottoms of said doors extendin inwardly under-said bottom piece to enga the frame and form a seal.

22. In combination, a main door frame comprising stiles and rails, doors hinged dircctly'to the hinge stile and cooperating with said frame to'form a cabinet supported thereby, male. locking elements carried by said doors, and female locking means mounted directly on the lock stile.

23. In combination, a main door frame. doors cooperatingtherewith to define a cabinet carried thereby, said doors con'iprisin; parallel spaced plates-united by offsetting one plate into contact with the other at-ins tervals and spot welding, each door being I it) ill) provided with a groove, a reinforcing plate set into the groove, a shelf carried by one door just above said plate, and shelf snpporting brackets attached to said plate.

21-. In combination, a main door frame, doors cooperating therewith to define a ('ab inet carried thereby, said doors comprising parallel spaced plates united by oll'sett'ing one plate into contact with the. other at intervals and spot welding, each door being provided with a groove. a reinforcing plate set into the groove, and a door stop having: its ends fastened to said plates.

'25. In combination. a main door frame, doors cooperating therewith to define a cabinet carried thereby, said doors comprising parallel spaced plates united by otl'setting one plate into contact with the other at in tervals and spot welding, each door provided with a groove, and reinforcing plates set into the grooves.

26. in combination, a main door frame. doors cooperating therewith to define a cabinet carried thereby, a fixed bottom piece for said cabinet carried by said frame, and projections on the tops of said doors extending inwardly to engage the frame when the doors are closed and form the top of the cabinet.

27. In combination, a main door frame, doors cooperating therewith to define a cabinet carried thereby. a fixed bottom piece for said cabinet carried by said frame, and projections on the bottoms of said doors extending inwardly under said bottom piece to engage the frame and form a seal.

28. In combination, a main door frame comprising stiles and rails, doors cooperatingtherewith to define a cabinet carried thereby, a fixed bottom piece for said cabinet mounted on said stiles, and projections on the bottoms of said doors extending inwardly under said bottom piece to engage the frame and form a seal.

In combination. a main door frame having stiles and rails, doors hinged to the hinge stile of said frame and cooperating with said frame to define a cabinet carried thereby. and cooperating locking means carried by the lock stile of said frame and the door margins adjacent thereto.

30. In combination, a cabinet door smaller than an ordinary room door and bent in at its vertical edges to contact directly with the faces of the stiles of an ordinary door, and hinge and lock fittings for mounting said cabinet door directly on the stiles of an ordinary door, whereby a plurality of said doors may be telescoped together and shipment of complete cabinets ready for installation made in small space.

31. In combination, a main door frame comprising stiles and rails defining an opening, and two doors hingedly mounted directly on one of the stiles of the frame at opposite sides thereof and covering said openings when closed, the distance between the inner faces of said doors being greater than the thickness of the stiles of the main door frame.

32. In combination, a main door frame comprising stiles and rails defining an opening, and two doors hingedly mounted directly on one of the stiles at opposite sides thereof and covering the, opening when closed, the inner face of each door being concaved to provide a space between the doors of greater depth than the thickness of the frame stiles.

In witness whereof, I hereunto subscribe my name this 23rd day of November, 1923.

FRANK J. MATCI-IETTE. 

